Results 21 to 30 of about 1,862,657 (332)

Facile and Efficient Enzymatic Methods for Harvesting or Removal of Cuticle Cells from Human Hair Shafts

open access: yesJournal of Natural Fibers, 2022
Human hair fibers are structurally organized as a cortex protected by an outer scaly sheath (cuticle). Developing methods to isolate these two compartments will help to elucidate their roles in hair biology and develop potential applications.
Nan Zhang   +5 more
doaj   +1 more source

Reinforcement of polypropylene with natural fibers: Mitigation of environmental pollution

open access: yesEnvironmental Challenges, 2023
: Recently, natural fibers have gained research attention in reinforcing polymers due to their availability and unique properties in polymer applications. Preliminary studies indicate indiscriminate disposal of human hair (HH) and the burning of cow hair
R.U. Arinze   +7 more
doaj   +1 more source

Characterization of the Promoter Regions of Two Sheep Keratin-Associated Protein Genes for Hair Cortex-Specific Expression. [PDF]

open access: yesPLoS ONE, 2016
The keratin-associated proteins (KAPs) are the structural proteins of hair fibers and are thought to play an important role in determining the physical properties of hair fibers.
Zhichao Zhao   +6 more
doaj   +1 more source

Hair Structures Affecting Hair Appearance

open access: yesCosmetics, 2019
Optical factors affecting hair appearance are reviewed based on hair structures from macroscopic to microscopic viewpoints. Hair appearance is the result of optical events, such as reflection, refraction, scattering, and absorption.
Shinobu Nagase
doaj   +1 more source

Endoscopic removal of a massive trichobezoar in a pediatric patient by using a variceal ligator cap: A case report and literature review

open access: yesFrontiers in Medicine, 2022
A trichobezoar is commonly formed in the gastrointestinal tract by ingestion of an individual’s own hair. A trichobezoar formed by hair and artificial materials constitutes a rare etiology scarcely reported in the current literature.
Dan Lu   +5 more
doaj   +1 more source

SK2 channels are required for function and long-term survival of efferent synapses on mammalian outer hair cells [PDF]

open access: yes, 2009
Cochlear hair cells use SK2 currents to shape responses to cholinergic efferent feedback from the brain. Using SK2-/- mice, we demonstrate that, in addition to their previously defined role in modulating hair cell membrane potentials, SK2 channels are ...
Adelman, John P.   +8 more
core   +1 more source

Activity of nAChRs containing α9 subunits modulates synapse stabilization via bidirectional signaling programs [PDF]

open access: yes, 2009
Although the synaptogenic program for cholinergic synapses of the neuromuscular junction is well known, little is known of the identity or dynamic expression patterns of proteins involved in non-neuromuscular nicotinic synapse development.
Elgoyhen, Ana Belen   +3 more
core   +1 more source

Lack of evidence for sprouting of Aβ afferents into the superficial laminas of the spinal cord dorsal horn after nerve section [PDF]

open access: yes, 2003
The central arborizations of large myelinated cutaneous afferents normally extend as far dorsally as the ventral part of lamina II in rat spinal cord. Woolf et al. (1992) reported that after nerve injury some of these afferents sprouted into lamina I and
Hughes, D.I.   +3 more
core   +1 more source

Efferent control of the electrical and mechanical properties of hair cells in the bullfrog's sacculus. [PDF]

open access: yesPLoS ONE, 2010
Hair cells in the auditory, vestibular, and lateral-line systems respond to mechanical stimulation and transmit information to afferent nerve fibers. The sensitivity of mechanoelectrical transduction is modulated by the efferent pathway, whose activity ...
Manuel Castellano-Muñoz   +2 more
doaj   +1 more source

A computer model of auditory efferent suppression: Implications for the recognition of speech in noise [PDF]

open access: yes, 2010
The neural mechanisms underlying the ability of human listeners to recognize speech in the presence of background noise are still imperfectly understood.
Brown, GJ, Ferry, RT, Meddis, R
core   +1 more source

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